Saw gage and filing clamp.



G. W. OURBY.

SAW GAGE AND FILING CLAMP.

APPLICATION FILED MARS, 1912.

LU5'Z8Q6I Patented Apr. 1, 1913.

8 u uIz-ntoz GEORGE W. CU'RZBY, BONHAM, TEXAS.

SAW GAGE AND FILING CLAMP.

Specification of Letters latent.

Patented A r. 1, 1913.

Application filed March 9, 1912. Serial No. 682,609.

' To all whom it may concern:

Be it lmown that I, GEORGE W. CURBY, a citizen of the United States,residing at Bonham, in the county of Fannin and State of Texas, haveinvented certain new and useful Improvements. in Saw Gages and F i1- ingClamps, of which the following is a specification, reference'being hadto the accompanying drawings.

My invention relates to new and useful improvements in the art ofmeasuring instruments and more particularly to a combined saw gage andclam and my object is to provide a device of this character which may bereadily applied to a saw blade to gage the depthof the cut and which maybe reversed and used as a clamp'for the saw blade'in setting the teeth.

A further object of the invention resides in providing a frame formed insections hinged one to the other, each of which sections is providedwith a clamping strip adjustably mounted on said sections, and a stillfurther object resides in providing a gage rule adjustably carried onone .of the clamping strips. I

Still another object of the invention resides in providing a devicewhich is .ex-

tremely simple in construction, inexpensive to manufacture, and onewhich is very efficient and useful in operation.

With these and other objects in view, my invention consists in the novelfeaturesof construction, combination and arrangement of parts as will behereinafter referred to and more particularly pointed out in thespecification'and'claims.

In the accompanying drawing forming a part of this application, Figure 1is a per spective view showing my device applied to use thereon. Fig. 2is a vertical section through the device showing the attachment of thearms of the sections of the clamping strips thereon. Fig. 3 is anadditional vertical section therethrongh showing'the attachment of thegage rule. to the one strip,

and Fig. 4 is a horizontal section as seen on.

] line ,H, Fig. 2.

In describing my invention, I shall refer to the drawings in whichsimilar reference characters designate corresponding parts throughoutthe several views and in wh1'ch-- 1 and 2-indicate pairs of arms or thelike, the arms ofeach pair bein provided on their inner op osed faces adacent one end thereof with t e ears 3 through which extend thepivot pins4 thereby forming pairs of pivoted arms. One arm of each pair isprovided immediately adjacent the one end thereof with a threadedopening 5 through which extends a thumb screw 6, the. free end of whichis adapted to contact with the inner .face of the opposed pivoted arm,whereby it will be seen that the opposite ends of the pairs of arms maybe forced toward one another to have a clamping action by turning thethumb screw in one direction into engagement with the one pivoted arm ofeach pair. These pairs of arms form a substantiahframe adapted forapplication to a saw blade 9, and in order to clamp said frame to theblade, a pair of metallic strips 10 and 11 is provided, said stripshaving their side edges bent inwardly toward one another to provide substantial channel-shaped members in cross section. These strips 10 and 11are adapted to besecured to the arms of this substantial frame member,and in order to provide for this securing, bolts 12 are loosely disposedthrough the one end of each of'the arms of said pairs of arms, saidbolts being extended through the end thereof opposite that cooperatingwith the bolts 6 and the heads of these bolts are disposed,respectively, in the channels formed by the opening in the side edges ofthe strips 10 and 11. The free ends of the screws or bolts 12 whichproject beyond the outer faces of the arms of said pairs, have engagedtherewith, the thumb nuts 13, whereby the same may be tightened againstthe outer faces of said arms to secure the strips thereto. In thismanner, each stripv will be secured to an arm of each pair, the flatfaces of said strips being disposed opposed to one another, to form aclamping member to engage opposite sides of the blade 9. .A slotted gagerule 14 1's also provided, through the slot of which extends the shankof a serew or bolt 15, the

ion

' the saw blade.

head of said bolt or screw being disposed in the channel of one of saidstrips, and a thumb nut 16 engaged with the threads of the shank of saidscrew, is adapted to be turned thereon until engaged with the one faceof said gage rule to secure the same in any adjusted position. From thisconstruction, it will be seen that the gage rule may be moved towardeither end of the strip to which it is secured andadjusted verticallythereof to any degree desired.

In practice when it is desired to use this device as a saw gage togagethe depth of the cut desired, the thumb screws 6 are first turned so asto permit the pairs of arms 1 and 2 to be separated at their lower'endsand applied over the back or rear edgeof Said thumb screws are thenturned in'an opposite direction to force the lower ends of the arms ofeach air toward one another thereby clamping e strips 10 and 11 lightlyagainst the opposite faces of the blade 9, it being understood that saidstri s have already been properly secured to t e ends of the arms 1 and2. Thegage rule is then placed in use by the operator by firstpositioning said rule towardone end of the strip 11 to which it issecured and measurement taken for the desired distance between the, sawteeth and the lower edge of said strip. When the proper adjustment hasbeen made'at this end, the thumb screw .in' connection with the adjacentpair of arms is turned to tightly clamp the strips against the blade atthis-end and the gage rule is then moved' to the opposite end of thedevice and a similar ad ustment made whereupon the o posite thumb screwis turned to tightly 0 amp the stripsat this let ter end of the'blade.The operator may then proceed with the sawing and when the depth towhich the gage has been set, is

reached, the lower efl'ective cdges'of thestrips 10 and 11 will contactwith the work being operated upon and thereby notify the operator thatthe required depth of out has been reached. The device may then beremoved through merely turning the thumb screw in an opposite directionto that in which it was turned previousl thereby permitting the clampinends 0 the deviceto.

be disengaged from t e side faces of the saw blade and the completedevice removed therefrom.

From the foregoing 'descri tion of the o eration of the device, it wille seen that t e same is not only used in connection with a saw as a gagefor the depth of cut to be obtained, but my device is also ada ted foruse as a clamp for the blade, where y the teeth may be operated uponwhen desired. The application of the device tothe blade in this use isidentical to that described above, but

menace.

- the blade is merel reversed so as to position the teeth there-o andthe clampin members upwardly. The device may e then means and it will beseen that these clamping strips 10 and 11 will retain the blade rigidwhile the teeth are being operated upon.

From the foregoing it will be seen that I have provided a simple,inexpensive and eflicient combined saw gage and clam which consists offew and simple parts an which, when set up for operation will be verydurable in construction and eiiicient and useful in operation. will beseen that by constructingthe clamping strips in the manner shown, thatIS, channel-shaped in cross section, the adjustability of the portionsof the device may be readily obtained and it will further be seen thatby making all the arts adjustable, as described and shown, the devicemay be readily and quickly applied to use or removed and. the partsseparated so that the same may be carried about the person, if defsired, with little or no inconvenience.

While I have articularly described the elements most we 1 adapted toperform the functions set forth, it is obvious that various changes inform, proportion and in the sorted to without dc arting'from the spiritor sacrificing any oi the novel features of the invention.

Having thus described this invention, what is claimed is 1. A device ofthe class described comprising pairs of arms, the arms of each pair be.--ing pivoted one to the other intermediate of their ends, a pair ofclamping stri s formed channel-shape in cross section, a uralit of boltshaving the heads thereof, ispose in the channels formed by said strips,and having the shanks thereof disposed through the ends of said arms,means to secure the shanks of said bolts to said arms, and meansengaging said arms adjacent their opposite ends to regulate the movementof the arms with respect to one another and corms spondin ly dispose theclamping strips to their e ective positions.

2. A device of the class described comprising pairs of arms, the armsofcach air being ivoted one to the other interme iate of their ends, aair of clamping strips designed channelape in cross section, the channelportions of the same bein dis osed on the outer opposed faces of saistrips, a pluralit of bolts having the heads thereofdispose in thechannels of said strips and having the shanks of the same extendedthrough the lower ends of the arms, and

thumb screws engaging. the arms on the op- Furthermore it placed in avise or 'other desired holding minor details of construction may bereposite side of the pivotal points thereof, said clamping strips, saidgage rule being 10 whereby said arms may be swung on' their capable ofvertical and longitudinal adjustpivots to dispose said clamping stripsin .ment on saidclampingstrip; their effective positions. In' testimonywhereof I hereunto affix my 3. A device of the class describedcomprissignature in the presence of two Witnesses. ing a frameconsisting of pivoted arms, GEORGE W. CURBY. clamping strips carriedthereon, means for Witnesses:

the operation of said arms, and a gage rule J..F.'HENnIx,

' removably and adjustably carried on one of MATTIE BELLE Knox.

